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This paper provides data on distribution of 13 chalcid wasp species (Hymenoptera: Chalcidoidea: Chalcididae) belonging to 9 genera and three subfamilies Chalcidinae, Dirhininae and Haltichellinae from Hormozgan province, southern Iran. All collected species are new records for the province. Two species Dirhinus excavatus Dalman, 1818 and Hockeria bifasciata Walker, 1834 are recorded from Iran for the first time. In the present study, D. excavatus is a new species record for the Palaearctic region. An updated list of all known species of Chalcididae from Iran is also included.

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Fifteen species belonging to ten genera of the encyrtid wasps (Hymenoptera: Chalcidoidea, Encyrtidae) were collected in southern Iran and are presented here with the host records. Four species are newly recorded for the Iranian fauna: Blastothrix aprica Sugonjaev, 1964; Psyllaephagus belanensis (Hoffer, 1963); Psyllaephagus pulchellus (Mercet, 1921) and Anagyrus archangelskayae Trjapitzin, 1972. Some new host associations were found for 10 encyrtid species. Two misidentifications were corrected. Available biological data as well as geographical distribution for each species are also included.

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Two species of Cleonyminae (Hymenoptera: Chalcidoidea, Pteromalidae), Chalcedectus sinaiticus (Masi, 1936) and Notanisus vanharteni Gibson, 2015 were found for the first time in Iran. These species were collected from south of Iran. Notanisus vanharteni was reared on Dorema ammoniacum (D. Don.) and C. sinaiticus was collected by a Malaise trap.

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In the present study, the family Sclerogibbidae (Hymenoptera, Chrysidoidea) is newly recorded for the Iranian insect fauna by several records of a single species, Sclerogibba talpiformis Benoit, 1950. The materialwas captured by a series of Malaise traps in the provinces of Fars andHormozgan (south of Iran) during 2013–2015.

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The digger wasps fauna (Hymenoptera: Apoidea) of Fars province in southern Iran was partly investigated. Members of three families: Pemphredonidae (5 species of 3 genera), Psenidae (3 species of 2 genera) and Philanthidae (2 species of 2 genera) were collected and documented. The following eight species: Diodontus brevilabris de Beaumont, 1967, D. crassicornis Gribodo, 1894, D. insidiosus Spooner, 1938, Passaloecus corniger Shuckard, 1837, Pemphredon inornata Say, 1824, Mimesa punctipleuris (Gussakovskij, 1937), Psenulus laevigatus (Schenck, 1857) and Cerceris spinifera haladai K. Schmidt, 2000, are new to the Iranian wasp fauna. In addition, two species: Psenulus schencki (Tournier, 1889) and Philanthus variegatus Spinola, 1839, are new records for Fars province. For each species, we include available distributional data as well as comments on its taxonomy and geographical distribution.

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Two cuckoo wasp species (Hymenoptera: Chrysididae), Trichrysis lacerta (Semenov, 1954) from the subfamily Chrysidinae, and Cleptes striatipleuris Rosa, Forshage, Paukkunen & Soon, 2015 from the subfamily Cleptinae, are newly documented for the Iranian fauna. The specimens were collected using Malaise traps in the Fars Province, south of Iran during 2015-2016. Notes about taxonomy, relevant references as well as geographical distribution of both species are given. The total number of Iranian Trichrysis and Cleptes currently increased to four and three species, respectively.

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This paper provides new information on the distribution of 32 species of Ichneumonidae (Hymenoptera: Ichneumonoidea) in Iran. Two genera i.e. Isadelphus Forster, 1869 and Linycus Cameron, 1903 as well as 13 species i.e. Casinaria mesozosta (Gravenhorst, 1829), Cymodusa antennator Holmgren, 1860, Gambrus tricolor (Gravenhorst, 1829), Ichneumon inops Holmgren, 1880, Idiolispa grossa (Gravenhorst, 1829), Isadelphus gallicola (Bridgman, 1880), Linycus exhortator (Fabricius, 1787), Lissonota buccator (Thunberg, 1822), L. carbonaria Holmgren, 1860, L. coracina (Gmelin, 1790), L. folii Thomson, 1877, L. saturator (Thunberg, 1822), Theroscopus esenbackii (Gravenhorst, 1829) are newly added to the Iranian wasp fauna.

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We provide new findings on the distribution of 13 species of the family Gasteruptiidae (Hymenoptera, Evanioidea) collected at 17 sampling localities in Fars and Hormozgan Provinces, south of Iran. The specimens were collected using Malaise traps during 2013–2019. Two species, Gasteruption sericeipes Kieffer, 1911 and G. syriacum Szépligeti, 1903 are new additions to the Iranian wasp fauna. Furthermore, 10 species are new provincial records. With the present additions, the total number of gasteruptiids recorded from Hormozgan, Fars and Iran is currently raised to 2, 14 and 29 species, respectively. For each species, provincial distribution in Iran and overall distribution, as well as the flight period, are presented and discussed together with the available references.

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Habrobracon hebetor Say (Hymenoptera: Braconidae) is an ectoparasitoid wasp in the family Braconidae and is widely used in biological pest control. Little information is available on the genetic diversity of geographically isolated populations of H. hebetor. In the present study, we assess the genetic structure and diversity of geographically distinct populations of H. hebetor collected from different regions of Iran. To this end, 19 populations of H. hebetor (Dehloran, Hamadan, Minab, Rudan, Ahvaz, Sari, Semnan, Bandar Lengeh, Haji Abbad, Jiroft, Shiraz, Sarpol-e Zahab, Gorgan, Isfahan, Urmia, Kahurestan, Taziyan, Isin, and Sarkhun) were collected from natural niches. For each population, we sequenced a ~660 base pair fragment of Cytochrome Oxidase subunit I (COI) successfully. Analysis of molecular variance revealed sharp differentiation among H. hebetor populations. Populations from Ahvaz, Dehloran, Jiroft and Minab were the most genetically diverged. A Mantel test showed significant positive correlation between genetic and geographic distances (r = 0.47, P < 0.001). The phylogenetic analysis clustered the populations into two major groups (A and B) (100); the major part was assigned to group A. Group B mainly included the populations from southern Iran. Based on these results, we conclude that H. hebetor in Iran is comprised of many diverse populations. These may be successfully applied in innundative release programs.
 

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Because of increasing demands for using of rotating systems in high accuracy and high speed applications, in addition of specific condition of rotating systems, it is necessary to analyze these rotating systems characteristics. Tolerance analysis is a useful tool for estimating effects of dimensional and geometrical errors of effective parameters on functional characteristics in a mechanical system. Unlike other mechanical systems, in addition to the dimensional and geometrical errors, the accuracy of the rotary systems performance directly depend on the flexibility of parts and Non Repetitive Run-Out (NRRO) errors. In this paper, a new method is proposed for static and dynamic tolerance analysis of the rotary systems with the dimensional and geometrical errors, the flexibility effects, and the NRRO errors based on the tolerance zone model. First, using the small degrees of freedom concept, the dimensional and geometrical errors and the NRRO error are modeled in the tolerance zone. Then, based on a new strategy, the performance -assembly functions of the system for modeling the error propagation of the rotary system in the static and dynamic conditions are extracted. Then, using the proposed equations, sensitivities of the requirements such as the end of shaft position and the main natural frequency to tolerances are computed. To illustrate applicability of the proposed method, a rotary system is considered as a case study. Monte Carlo simulations are used for validation of the computational results from proposed method.

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Augmentative release of native natural enemies is a prominent strategy for suppression of crop pests. Intrinsic differences among populations of natural enemies may affect their efficiency in pest management programs. We characterized life history traits of 13 climatically and geographically isolated populations of Habrobracon hebetor Say (Hymenoptera: Braconidae) from different regions of Iran to assess their suitability for biological control of noctuid moths. All experiments were performed at 25±1°C, 65±5 RH and 16:8 (L:D) hours photoperiod regime. Ephestia kuehniella (Zeller) (Lepidoptera: Pyralidae) was used as a laboratory host. Our results revealed significant variation in female longevity, paralysis and parasitism rate, sex ratio, reproductive rate and host allocation among different H. hebetor populations tested. The highest number of offspring (124.2) and parasitized larvae (160.1) were observed in Bandar Lengeh and the lowest ones was observed in Urmia and Jiroft, respectively (3.4 and 9.3 for Urmia and 3.1 and 10.1 for Jiroft). Also, the wasps of Bandar Lengeh paralyzed more than 95% of the introduced host larvae. The longest female longevity and male production (21.3 days and 80.1, respectively) were in Bandar Abbas and Bandar Lengeh (21.3 days and 80, respectively), while the lowest ones were in Dehloran (12.9 days and 40.2, respectively). Gorgan population deployed the highest number of Ephestia kuehniella larvae in foraging behavior test. These results show considerable variation in the life history traits of various populations of H. hebetor, which may affect performance of these populations under field condition.